Triphenylphosphine → 3-[6-(azetidine-1-carbonyl)pyridin-3-yl]oxy-N-(5-methylpyrazin-2-yl)-5-(2-oxooxolan-3-yl)oxy-benzamide

HRID 600551Notes

Reaction equation

HRID 600551 reaction equation
[N:1]1([C:5]([C:7]2[N:12]=[CH:11][C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:27]=[C:28]([OH:30])[CH:29]=3)[C:17]([NH:19][C:20]3[CH:25]=[N:24][C:23]([CH3:26])=[CH:22][N:21]=3)=[O:18])=[CH:9][CH:8]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1.O[CH:32]1[CH2:36][CH2:35][O:34][C:33]1=[O:37].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>C1COCC1>[N:1]1([C:5]([C:7]2[N:12]=[CH:11][C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:27]=[C:28]([O:30][CH:32]4[CH2:36][CH2:35][O:34][C:33]4=[O:37])[CH:29]=3)[C:17]([NH:19][C:20]3[CH:25]=[N:24][C:23]([CH3:26])=[CH:22][N:21]=3)=[O:18])=[CH:9][CH:8]=2)=[O:6])[CH2:2][CH2:3][CH2:4]1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 545831alpha-Hydroxy-gamma-butyrolactoneHCID 5363146Diisopropyl azodicarboxylateHCID 536296993-{[6-(azetidin-1-ylcarbonyl)pyridin-3-yl]oxy}-5-hydroxy-N-(5-methylpyrazin-2-yl)benzamide2×

Product 1

HCID 597611403-[6-(azetidine-1-carbonyl)pyridin-3-yl]oxy-N-(5-methylpyrazin-2-yl)-5-(2-oxooxolan-3-yl)oxy-benzamide

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

3-[6-(Azetidine-1-carbonyl)pyridin-3-yl]oxy-5-hydroxy-N-(5-methylpyrazin-2-yl)benzamide (Intermediate 1) (203 mg, 0.5 mmol), 3-hydroxyoxolan-2-one (CAS no. 19444-84-9) (0.078 mL, 1 mmol) and triphenyl phosphine (262 mg, 1 mmol) in anhydrous THF (10 mL) under argon at 0° C. was treated dropwise with DIAD (0.20 mL, 1 mmol). The mixture allowed to warm to room temperature and stirred for 16 hours. The solvent was removed by evaporation under reduced pressure and the residue was purified by chromatography on silica eluting with 0-4% methanol:DCM to give product (212 mg 86%). 1H NMR δ (400 MHz, CDCl3) 2.29 (quintet, 2H), 2.40-2.48 (m, 1H), 2.50 (s, 3H), 2.69-2.78 (m, 1H), 4.18 (t, 2H), 4.33 (q, 1H), 4.49 (t, 1H), 4.64 (t, 2H), 4.99 (t, 1H), 6.89 (s, 1H), 7.18 (s, 1H), 7.33 (d, 1H), 7.36 (s, 1H), 8.06 (d, 1H), 8.08 (s, 1H), 8.28 (s, 1H), 8.41 (s, 1H), 9.46 (s, 1H); m/z 490 (M+H)+.

Workup

  1. customThe solvent was removed by evaporation under reduced pressure
  2. customthe residue was purified by chromatography on silica eluting with 0-4% methanol
  3. customDCM to give product (212 mg 86%)

Sources & evidence

ORD record
ord-3d5dde76340548a4a6900761444b98ae
Source dataset
uspto-grants-2011_03
Patent number
US07902200B2

Reaction notes

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